components: Add out-of-line copy ctors for complex classes.

components/omnibox/browser/omnibox_field_trial.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_FIELD_TRIAL_H_
 #define COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_FIELD_TRIAL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 15 matching lines @@
   // A set of parameters describing how to cap a given count score.  First,
   // we apply a half-life based decay of the given count and then find the
   // maximum relevance score based on the decay factor or counts specified
   // in the corresponding bucket list. See comment on |buckets_| for details.
   class ScoreBuckets {
    public:
     // Stores the max relevance at each count/decay factor threshold.
     typedef std::pair<double, int> CountMaxRelevance;
 
     ScoreBuckets();
+    ScoreBuckets(const ScoreBuckets& other);
     ~ScoreBuckets();
 
     // Computes a half-life time decay given the |elapsed_time|.
     double HalfLifeTimeDecay(const base::TimeDelta& elapsed_time) const;
 
     int relevance_cap() const { return relevance_cap_; }
     void set_relevance_cap(int relevance_cap) {
       relevance_cap_ = relevance_cap;
     }
 
@@ skipping 401 matching lines @@
   // prioritize different wildcard contexts, see the implementation.  How to
   // interpret the value is left to the caller; this is rule-dependent.
   static std::string GetValueForRuleInContext(
       const std::string& rule,
       metrics::OmniboxEventProto::PageClassification page_classification);
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(OmniboxFieldTrial);
 };
 
 #endif  // COMPONENTS_OMNIBOX_BROWSER_OMNIBOX_FIELD_TRIAL_H_